Lap pins



W. A. KLUTTZ May 5, 1964 LAP PINS Filed July 26, 1962 United StatesPatent 3,131,881 LAP PINS Walter Albert Kiuttz, Gastonia, N.C., assignorto Kiuttz Machine & Foundry Co, Gastonia, Nil, a partnership Filed July26, 1962, Ser. No. 212,643 11 Claims. (Ci. 242.1)

This invention relates to a device for supporting a roll of lap materialand more especially to a lap pin for use in connection with textilemachinery such as lapper pickers, intermediate pickers, one processpickers, carding engines and the like.

The function of lap pins is generally described and illustrated inPatent No. 2,105,064, issued January 11, 1938, and Patent Nov 2,968,447,issued January 17, 1961. The conventional lap pin usually consists of anelongated iron rod having a cast iron disk rigidly secured to one endthereof. As stated in the first-named patent, lap pins of this typerequire special care during normal use in order to avoid breakage of thedisk and consequent expensive repairs. A number of attempts have beenmade to solve this problem, including the elimination of the cast irondisk and the substitution therefor a coiled integral extension of therod. Such solutions, however, have not proven entirely satisfactorysince even the coiled end portion often becomes bent or broken.Moreover, the labor and expense of initially manufacturing the coiledend portion of the optimum size, shape and weight is prohibitive.

Research and development has revealed that the solution to this problemresides in a proper method of mounting the cast iron disk on the rod,rather than the elimination of the disk altogether. A cast iron disk isparticularly suitable as a component of a lap pin in that it is easilyand economically reduced to the proper size and shape so that the lappin will be accurately proportioned and balanced.

It is therefore an object of this invention to provide a lap pincomposed of an elongated rod having a cast iron disk detachably andyieldably secured upon one end thereof.

It is another object of this invention to provide a lap pin of the classdescribed wherein a plurality of spaced normally compressed resilientrings are interposed between the inner opposed faces of the disk and therod end portion so as to normally provide a very small clearance betweensaid opposed faces intermediate the rings. Such a construction preventsmetal-to-metal contact between the disk and rod end portion until impactor other stresses are applied to the disk sufficient to overcome theresistance of the interposed resilient rings thereby providing a measureof resiliency during the stage of an impact.

It is another object of this invention to provide a novel method ofdetachably mounting the disk upon the rod so that the disk may be easilyremoved or replaced.

Although the disks of conventional lap pins, as well as my hereindisclosed improvements thereover, are sometimes referred to as cast irondisks, it is to be understood that a wide range of other metallic ornon-metallic materials may be employed without departing from the spiritof the invention.

Some of the objects of invention having been stated, other objects willappear as the description proceeds when taken in connection with theaccompanying drawings, in which,

FIGURE 1 is an elevation of my improved lap pin, the intermediate rodportion thereof being broken away;

FIGURE 2 is an enlarged sectional detail view through the left-handportion of FIGURE 1;

FIGURE 3 is a view looking along line 33 in FIG- URE 2;

FIGURE 4 is a sectional View taken along line 4-4 in FIGURE 2;

3,131,881 Patented May 5, 1964 FIGURE 5 is an exploded isometric view ofportions of the lap pin shown in FIGURE 1;

FIGURE 6 is an elevational view of a portion of an intermediate pickershowing my improved lap pins in use thereon;

FIGURE 7 is a sectional view through a lap roll wound upon a windingarbor which, in turn, supports the lap P FIGURE 8 is a view similar tothe left-hand portion of FIGURE 7, but showing the lap pin andassociated lap partially withdrawn from the arbor, and

FIGURE 9 is a detail view similar to FIGURE 2 and showing a slightlymodified form of invention.

Referring more specifically to the drawings, the numeral 10 denotesbroadly my improved lap pin which comprises an elongated rod 11 having adisk 12 secured upon one end thereof.

When the present device is used in association with textile intermediatepickers such as designated by the numeral 14 in FIGURE 6, the rod 11 istelescopically mounted within an elongated hollow arbor in the mannershown in FIGURE 7, said arbor having wound therearound a roll 16 offibrous lap material. A plurality of such rolls are positioned at theintake end of the picker 14 to be simultaneously unwound and fed intothe latter, at which time suitable standards 17 on the picker areengaged by the arbor ends to maintain the rolls spaced apart one fromanother. In other applications of the invention, the lap pin 11) servesas the sole support for roll 16, the rod 11 serving as a spindle orcentral core and one face of the disk engaging the end of the roll.

Conventional lap pins consisting of an elongated rod with a cast irondisk welded or otherwise permanently secured upon one end thereofrepresent considerable weight when a lap of fibrous material is woundthereon. The combined weight is even greater when the lap pin is used inassociation with central arbor 15; consequently, when the assembly isdropped or otherwise subjected to abnormal impacts during handlingbreakage of the disk frequently occurs. Repair of this type of breakagerequires as much or more labor and expense than fabrication of a new lappin.

In order to reduce the liklihood of breakage the disk 12 is yieldablysecured upon the end of rod 11. Furthermore, the disk is detachablysecured so that removal of replacement is a relatively inexpensiveoperation.

It will be observed in FIGURE 2 that one end portion of rod 11 isprovided with a plurality of longitudinally spaced grooves 19 in whichrings 20 of resilient material are mounted respectively. The outerperipheries of rings 21 extend radially above the periphery of rod 11before disk 12 is secured in position (FIGURE 5). When, however, thedisk 12 is secured in the position shown in FIGURE 2 the rings areradially compressed and serve to bind the shaft 11 and disk 12 together.It will also be noted that a working clearance 22 at least must beprovided between the periphery of rod 11 and disk bore 23 in which therod is mounted. The resilient compressed rings 20 normally maintain thisclearance, but will permit a limited rocking or other movement relativeto the rod when the disk is subjected to impact, the amount of suchrelative movement being primarily determined by the amount of existingclearance 22. Thus the initial force of an impact upon disk 12 will beyieldingly resisted by the resilient rings, followed by a rigidresistance when the metallic inner periphery of bore 23 is moved intocontact with the outer metal periphery of rod 11. Stated differently,the provision of spaced rings 29 in grooves 19 permit a part of the rodend portion to be utilized to resiliently absorb the initial stage ofthe impact while the remainder of the end portion within bore 23is'utilized to rigidly resist the latter stage of the impact.

The end portion of rod 11 is also provided with peripheral grooves 25and 26 for removably accommodating split radially spn'ngable rings27 and28 respectively. One face of, disk 12 has a bore 29 therein (FIGURES 3and said bore lying in the plane of and concentric with groove 25 andring 27. The size of bore 29 is substantially the same as the size ofthe outer periphery of ring 27 thereby locking the ring within itsgroove and also preventing movement of the disk in one directionlongitudinally of said end portion.

The face of disk 12 disposed adjacent the stern of rod 11 is providedwith a bore 30 (FIGURES 2 and 4), said bore lying in the plane of andconcentric with groove 26 and ring 28. The diameter of bore 30 issubstantially larger than the outer periphery of spring ring 28 wherebythe ring may be removed or inserted in groove 26. Therefore, the springring 27 is locked in its groove 25 by disk bore 29 in one face of thedisk, and the second spring ring 26 engages the opposite face of thedisk and the groove 26 to hold the first spring ring is locked position.

Disk bore 30 is of sufiicient depth to permit spring ring 28 to besubstantially countersunk within the disk so as to minimize thelikelihood of the ring becoming entangled with the lap material woundaround rod 11.

FIGURE 9 illustrates a modification of the invention furthercharacterized by a disk 12a having a bore 2% therein of sufiicient depthto permit the end of rod 110 and the spring ring 27a to be countersunkbelow the face of the disk, thereby permitting said face to be utilizedas a bearing surface when the rod 11 is to be maintained in an uprightposition. This form of invention is still further characterized by theprovision of a relatively wider groove 19a'forreceiving the spring ring27a, said ring,

being springable longitudinally as well as radially of rod 11a. Theserpentine configuration of ring 27a permits longitudinal springabilityand serves to yieldably press the disk 12a against the spring ring atthe opposite face of the disk. I

In the drawings and specification preferred embodiments of the inventionhave been disclosed, and although specific terms are employed they areused in a generic sense and not intended for the purpose of limitation,the scope of invention being set forth in the following claims.

I claim:

1. In a device for supporting a roll of textile lap material, anelongated rod member about which said lap is adapted to be wound, and adisk member on one end portion of said rod member for supporting the endof the wound lap, means for preventing movement in one direction of saiddisk member longitudinally of said rod member, comprising aspring ringat one face of said disk member and surrounding said rod end portion,means including a bore in said disk face for receiving said ring and forradially contracting the latter into fixed engagement with said rod endportion, and means reelasably engageable with said rod end portion atthe opposite face of the disk member for permitting movement of the diskmember in an opposite direction longitudinally of the rod member wherebysaid contracted ring may be released from said disk bore and from itsfixed contracted engagement with said rod end portion in the ordernamed.

2. A device as defined in claim 1 and further comprising means forpreventing relative rotation between said disk and rod members includinga plurality of normally compressed resilient rings spaced upon said rodend portion and lying between the inner opposed faces of said rod anddisk members, said resilient rings normally maintaining said inneropposed faces in spaced relation.

3. A device as defined in claim 1 wherein said spring ring is providedwith a serpentine configuration to thereby yieldingly press said diskmember longitudinally of said rod member and against said last-namedmeans.

, of said disk having a bore concentrically of said groove and lyingsubstantially in the plane of the latter, the inner marginal edge ofsaid ring fitting in said groove and its outer marginal edge abuttingthe inner periphery of said bore whereby the ring will be locked inposition and movement of said disk toward said end portion will beprevented, a second spring ring, the opposite face of said disk having asecond bore therein substantially larger than the outside periphery ofsaid second ring and said rod havmg a second groove thereinconcentrically of said second bore and lying substantially in the planeof the latter, the inner marginal edge of said second ring fitting insaid second groove and its outer periphery being normally disposed inspaced relation to the inner periphery of said second bore, wherebymovement of said disk longitudinally of the rod and away from said endportion will be prevented and whereby the second spring ring may beexpanded within the second bore to remove its inner marginal edge fromthe second groove, and at least two normally compressed resilient ringsspaced upon said rod end portion at points intermediate said springrings, said resilient rings lying between the inner opposed surfaces ofthe disk and the rod end portion.

5. A device as defined in claim 4 wherein said rod end portionterminates within saidfirst bore in the disk.

6. A device as defined in claim 5 wherein said first spring ring isprovided with a serpentine configuration substantially throughout itslength to thereby yieldingly confine the disk between the rings.

7. A device as defined in claim 4 wherein said first spring ring isprovided with a serpentine configuration substantially throughout itslength to thereby yieldingly confine the disk between the rings. 7

8. In a device for supporting a roll of textile lap material, anelongated rod around which said lap is adapted to be wound, a disk forlimiting movement of said roll in one direction longitudinally of saidrod, and means for detachably and yieldingly securing said disk upon oneend portion of said rod comprising, a spring ring, said rod end portionhaving a peripheral groove therein and one face of said disk having abore concentrically of said groove and lying substantially in the planeof the latter,

the inner marginal edge of said ring fitting in said groove and itsouter marginal edge abutting the inner periphery of said bore wherebythe ring will be locked in position and movement of said disk toward theend of said portion will be limited, and a second spring ring, theopposite face of, said disk having a second bore therein substantiallylarger than the outer peripheryof the second ring and said rod having asecond groove therein concentrically of said second bore and lyingsubstantially in the plane of the latter, the inner marginal edge of thesecond ring fitting in said second groove and its outer periphery beingnormally disposed in spaced relation to the mner periphery of the secondbore, whereby movement of said disk longitudinally of the rod and awayfrom the end of said portion will be limited and whereby the secondsprmgring may be expanded within the. second bore to remove its innermarginal edge fiom the second groove.

9 A device as defined in claim 8 wherein said first spring ring isprovided with a serpentine configuration yieldingly urging said diskagainst the second ring.

10. In a device for supporting a roll of textile lap material, anelongated rod member about which said lap is adapted to'be wound, and adisk member for limiting movement of the roll in one directionlongitudinally of said rod member, means for fixedly and detachablymounting said disk member upon one end of said rod member, comprisingmeans including a pair of spaced spring rings releasably clamping theperiphery of the rod member and respectively engaging the opposite facesof the disk member, and means for preventing relative rotation betweensaid disk and rod members including at least tWo normally compressedresilient rings spaced upon the rod member at points intermediate saidspring rings, said resilient rings normally maintaining the inneropposed surfaces of said disk and rod members in spaced relation.

11. A device for supporting a roll of textile lap material comprisingthe combination of, an elongated rod member about which said lap isadapted to be wound, a disk member at one endof said rod member, meansfor preventing relative rotation between said members including aplurality of normally compressed resilient rings spaced upon said rodend and lying between the inner opposed surfaces of said members, saidresilient rings nor- References Cited in the file of this patent UNITEDSTATES PATENTS 2,577,009 Frantz Dec. 4, 1951 2,861,435 Seanor Nov. 25,1958 2,968,447 Neuman Jan. 17, 1961 3,005,323 Carter et al. Oct. 24,1961 OTHER REFERENCES Waldes Truarc brochure received Nov. 12, 1952,page 5.

1. IN A DEVICE FOR SUPPORTING A ROLL OF TEXTILE LAP MATERIAL, ANELONGATED ROD MEMBER ABOUT WHICH SAID LAP IS ADAPTED TO BE WOUND, AND ADISK MEMBER ON ONE END PORTION OF SAID ROD MEMBER FOR SUPPORTING THE ENDOF THE WOUND LAP, MEANS FOR PREVENTING MOVEMENT IN ONE DIRECTION OF SAIDDISK MEMBER LONGITUDINALLY OF SAID ROD MEMBER, COMPRISING A SPRING RINGAT ONE FACE OF SAID DISK MEMBER AND SURROUNDING SAID ROD END PORTION,MEANS INCLUDING A BORE IN SAID DISK FACE FOR RECEIVING SAID RING AND FORRADIALLY CONTRACTING THE LATTER INTO FIXED ENGAGEMENT WITH SAID ROD ENDPORTION, AND MEANS REELASABLY ENGAGEABLE WITH SAID ROD END PORTION ATTHE OPPOSITE FACE OF THE DISK MEMBER FOR PERMITTING MOVEMENT OF THE DISKMEMBER IN AN OPPOSITE DIRECTION LONGITUDINALLY OF THE ROD MEMBER WHEREBYSAID CONTRACTED RING MAY BE RELEASED FROM SAID DISK BORE AND FROM ITSFIXED CONTRACTED ENGAGEMENT WITH SAID ROD END PORTION IN THE ORDERNAMED.